end
7e30272020
ExprPtrs dereferences []*T values, skips nil entries, and maps survivors through a converter. Co-authored-by: Cursor <cursoragent@cursor.com>
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
package dbx
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import (
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"fmt"
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"github.com/go-jet/jet/v2/mysql"
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)
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// ExprValues converts a list of values to a list of Expression values using
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// function f to transform the values (mysql.String for strings, mysql.Uint64, etc).
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func ExprValues[T any](values []T, f func(T) Expression) []Expression {
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expressions := make([]Expression, len(values))
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for i, v := range values {
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expressions[i] = f(v)
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}
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return expressions
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}
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// ExprPtrs converts a list of pointers to Expression values, skipping nil
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// entries. Function f receives the dereferenced value.
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func ExprPtrs[T any](values []*T, f func(T) Expression) []Expression {
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expressions := make([]Expression, 0, len(values))
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for _, v := range values {
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if v == nil {
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continue
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}
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expressions = append(expressions, f(*v))
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}
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return expressions
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}
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// ExprStringers converts a list of fmt.Stringers to a list of Expression values.
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func ExprStringers(values []fmt.Stringer) []Expression {
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expressions := make([]Expression, len(values))
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for i, v := range values {
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expressions[i] = mysql.String(v.String())
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}
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return expressions
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}
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// StringKSUIDExpr returns a Jet expression for a string-encoded KSUID column.
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func StringKSUIDExpr(id StringKSUID) Expression {
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if id.IsNil() {
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return mysql.StringExp(mysql.NULL)
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}
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return mysql.String(id.String())
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}
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// BinaryKSUIDExpr returns a Jet expression for a binary-encoded KSUID column.
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func BinaryKSUIDExpr(id BinaryKSUID) Expression {
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if id.IsNil() {
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return mysql.StringExp(mysql.NULL)
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}
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return mysql.String(string(id.Bytes()))
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}
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